Portable power source



FIG. 1 is a rear perspective view of a first embodiment of a portable power source showing the new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a rear perspective view of a second embodiment of a portable power source showing the new design;

FIG. 10 is a front perspective view of the second embodiment;

FIG. 11 is a front view of the second embodiment;

FIG. 12 is a rear view of the second embodiment;

FIG. 13 is a left side view of the second embodiment;

FIG. 14 is a right side view of the second embodiment;

FIG. 15 is a top view of the second embodiment; and,

FIG. 16 is a bottom view of the second embodiment.

The broken lines in the figures depict portions of the portable power source that form no part of the claimed design. 

CLAIM The ornamental design for a “portable power source”, as shown and described. 